FR2440655B1 - AUTOMATIC END TUNING CIRCUIT - Google Patents
AUTOMATIC END TUNING CIRCUITInfo
- Publication number
- FR2440655B1 FR2440655B1 FR7926898A FR7926898A FR2440655B1 FR 2440655 B1 FR2440655 B1 FR 2440655B1 FR 7926898 A FR7926898 A FR 7926898A FR 7926898 A FR7926898 A FR 7926898A FR 2440655 B1 FR2440655 B1 FR 2440655B1
- Authority
- FR
- France
- Prior art keywords
- tuning circuit
- automatic end
- end tuning
- automatic
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13548678A JPS5563118A (en) | 1978-11-02 | 1978-11-02 | Aft circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2440655A1 FR2440655A1 (en) | 1980-05-30 |
FR2440655B1 true FR2440655B1 (en) | 1985-09-27 |
Family
ID=15152840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7926898A Expired FR2440655B1 (en) | 1978-11-02 | 1979-10-30 | AUTOMATIC END TUNING CIRCUIT |
Country Status (8)
Country | Link |
---|---|
US (1) | US4263675A (en) |
JP (1) | JPS5563118A (en) |
AU (1) | AU534324B2 (en) |
CA (1) | CA1135884A (en) |
DE (1) | DE2944258A1 (en) |
FR (1) | FR2440655B1 (en) |
GB (1) | GB2035737B (en) |
NL (1) | NL7908013A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4326296A (en) * | 1980-10-01 | 1982-04-20 | Magnavox Consumer Electronics Co. | Tuning system for a color television receiver having a varactor tuner |
JPS586431U (en) * | 1981-07-02 | 1983-01-17 | 三洋電機株式会社 | Tuner malfunction prevention circuit |
JPS58114620A (en) * | 1981-12-28 | 1983-07-08 | Matsushita Electric Ind Co Ltd | Automatic channel searching and selecting device |
DE3438286A1 (en) * | 1984-10-16 | 1986-04-17 | Hansen/Catito Elektronik, 1000 Berlin | METHOD AND CIRCUIT ARRANGEMENT FOR CONVERTING FREQUENCY-MODULATED SIGNALS OVER AT LEAST ONE INTERMEDIATE FREQUENCY IN LOW-FREQUENCY SIGNALS |
DE3606250A1 (en) * | 1986-02-24 | 1987-08-27 | Hansen Elektronic & Co | METHOD AND DEVICE FOR CONVERTING FREQUENCY-MODULATED SIGNALS OVER AT LEAST ONE INTERMEDIATE FREQUENCY IN LOW-FREQUENCY SIGNALS |
IT1221243B (en) * | 1988-01-28 | 1990-06-27 | Sgs Thomson Microelectronics | GENERATION OF A STOP PULSE OF AN AUTOMATIC SEARCH PROCEDURE OF AN ISSUING STATION USING AN AFO SIGNAL PRODUCED BY AN AUTOMATIC FREQUENCY CONTROL SYSTEM OF A RECEIVER |
US4814887A (en) * | 1988-05-23 | 1989-03-21 | General Instrument Corporation | Automatic frequency control |
US5842119A (en) * | 1993-02-05 | 1998-11-24 | Emerson; Harry Edwin | Radio scanner and display system |
KR960004515B1 (en) * | 1993-06-08 | 1996-04-06 | 엘지전자주식회사 | Auto selecting range expantion apparatus & method of tv |
WO1996004724A1 (en) * | 1994-08-04 | 1996-02-15 | Harry Edwin Emerson | Radio scanner and display system |
JP4462729B2 (en) * | 2000-07-06 | 2010-05-12 | 株式会社ルネサステクノロジ | Video intermediate frequency processor |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3069637A (en) * | 1961-07-31 | 1962-12-18 | Jr Ralph M Seeley | Electronic signal seeking means having tuning reactance automatically controlled by difference between concurrent and delayed detector output |
NL6811422A (en) * | 1968-08-09 | 1970-02-11 | ||
GB1409798A (en) * | 1971-09-25 | 1975-10-15 | Matsushita Electric Ind Co Ltd | Frequency control arrangements |
NL7215429A (en) * | 1972-11-15 | 1974-05-17 | ||
JPS5325444B2 (en) * | 1973-01-23 | 1978-07-27 | ||
DE2333851A1 (en) * | 1973-07-03 | 1975-01-23 | Standard Elektrik Lorenz Ag | METHOD AND ARRANGEMENTS FOR THE INDEPENDENT RE-ADJUSTMENT OF THE OSCILLATOR FREQUENCY, SET WITH A TUNING ARRANGEMENT, OF AN OVERLAY RECEIVER OF A PICTURE AND / OR SOUND REPLAY ARRANGEMENT |
NL7313625A (en) * | 1973-10-04 | 1973-12-27 | ||
US3939427A (en) * | 1974-08-05 | 1976-02-17 | Quasar Electronics Corporation | Automatic fine tuning defeat circuit |
US3987399A (en) * | 1974-09-11 | 1976-10-19 | Pioneer Electronic Corporation | Radio receiver |
JPS528717A (en) * | 1975-07-10 | 1977-01-22 | Toshiba Corp | Automatic channel selecteor |
US4005256A (en) * | 1975-11-03 | 1977-01-25 | Gte Sylvania Incorporated | AFC circuit |
JPS5811131B2 (en) * | 1975-11-22 | 1983-03-01 | ソニー株式会社 | Senkiyokusouchi |
CA1064580A (en) * | 1975-12-26 | 1979-10-16 | Sony Corporation | Automatic fine tuning circuit |
-
1978
- 1978-11-02 JP JP13548678A patent/JPS5563118A/en active Granted
-
1979
- 1979-10-25 CA CA000338457A patent/CA1135884A/en not_active Expired
- 1979-10-25 AU AU52181/79A patent/AU534324B2/en not_active Ceased
- 1979-10-29 US US06/088,852 patent/US4263675A/en not_active Expired - Lifetime
- 1979-10-29 GB GB7937412A patent/GB2035737B/en not_active Expired
- 1979-10-30 FR FR7926898A patent/FR2440655B1/en not_active Expired
- 1979-11-01 NL NL7908013A patent/NL7908013A/en not_active Application Discontinuation
- 1979-11-02 DE DE19792944258 patent/DE2944258A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPS576286B2 (en) | 1982-02-04 |
JPS5563118A (en) | 1980-05-13 |
FR2440655A1 (en) | 1980-05-30 |
DE2944258A1 (en) | 1980-05-08 |
CA1135884A (en) | 1982-11-16 |
GB2035737A (en) | 1980-06-18 |
AU534324B2 (en) | 1984-01-19 |
AU5218179A (en) | 1980-05-15 |
US4263675A (en) | 1981-04-21 |
GB2035737B (en) | 1982-12-22 |
NL7908013A (en) | 1980-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |